Cloud computing is gaining tremendous momentum in both academia and industry. The application of Cloud computing, however, has mostly focused on Web applications and business applications; while the recognition of using Cloud computing to support large-scale workflows, especially dataintensive scientific workflows on the Cloud is still largely overlooked. We coin the term “Cloud Workflow”, to r...

This paper provides a general framework for evaluating the welfare impact of government policy changes towards taxes, transfers, and publicly provided goods. The results show that the behavioral response required for welfare measurement is the causal impact of each agent’s response to the policy on the government’s budget. A decomposition of this response into income and substitution effects is...

Big data has been arising a growing interest in both scien- tific and industrial fields for its potential value. However, before employing big data technology into massive appli- cations, a basic but also principle topic should be investigated: security and privacy. One of the biggest concerns of big data is privacy. However, the study on big data privacy is still at a very early stage. Many or...

Cloud computing has grabbed the spotlight within some time span. The cloud computing trend is increasing rapidly so to implement it into an organization we need to observe the threats of cloud computing. At an unusual pace it has turned the face of government and business and has created some new challenges. However developers have created new vulnerabilities, including security issues whose fu...

Cloud technologies have improved time to market (TTM), lowered operational and capital expenditures, and provided organizations with an ability to dynamically adjust provisioning to meet changing needs globally. The term “cloud” remains nebulous as cloud implementations include ever-changing technology offerings, making it difficult to discern how to optimize a cloud solution to meet your busin...

The 4CaaSt project aims at developing a PaaS framework that enables flexible definition, marketing, deployment and management of Cloud-based services and applications. This paper describes the major challenges tackled by 4CaaSt for the comprehensive management of applications and services in a PaaS. These challenges involve the blueprint language to describe applications in the cloud and its li...

The advent of cloud computing technologies shows great promise for web engineering and facilitates the development of flexible, distributed, and scalable web applications. Data integration can notably benefit from cloud computing because integrating web data is usually an expensive task. This paper introduces CloudFuice, a data integration system that follows a mashup-like specification of adva...

While it is widely acknowledged that cloud computing has the potential to transform a large part of the IT industry, issues surrounding the adoption of cloud computing have received relatively little attention. Drawing on three case studies of service providers and their customers, this study will contribute to the existing cloud technologies literature that does not address the complex and mul...

Cloud computing is one of the most emerging technologies in the world providing computing resources as a service on demand via internet maintained by third party service provider. In cloud environment trust is one of the most sensitive and important issue. In order to maintain the privacy of certain user we need strong authentication mechanism. This paper will discuss about the available authen...

As interest in the cloud increases, there has been a lot of talk about the maturity and trustworthiness of cloud storage technologies. Is it still hype or is it real? Many endusers and IT managers are getting very excited about the potential benefits of cloud storage, such as being able to store and manipulate data in the cloud and capitalizing on the promise of higher-performance, more scalabl...